首页|Laser speckle contrast imaging based on uniting spatiotemporal Fourier transform
Laser speckle contrast imaging based on uniting spatiotemporal Fourier transform
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万方数据
维普
We propose a laser speckle contrast imaging method based on uniting spatiotemporal Fourier transform.First,the raw speckle images are entirely transformed to the spatiotemporal frequency domain with a three-dimensional(3D]fast Fourier transform.Second,the dynamic and static speckle components are extracted by applying 3D low-pass and high-pass filter-ing in the spatiotemporal frequency domain and inverse 3D Fourier transform.Third,we calculate the time-averaged modu-lation depth with the average of both components to map the two-dimensional blood flow distribution.The experiments demonstrate that the proposed method could effectively improve computational efficiency and imaging quality.
万方数据
维普
